Is 54K too old to switch to synthetic oil?

[AtoB]

i am bringing my jeep in for some winter service and would love to switch over but have heard it may start leaking

 

[ridenby]

I got Jeep at 120000+ miles,use syn.since then,now at 186000+ no problems,engine is dry on outside.I change at 3000 or less.

 

[ChiefRudy]

i just started putting full synthetic in my Fiancee's 02 Kj and it has 125k on it. I also run my 06 KJ with full synthetic since I got the jeep. i change both vehicles every 6 months.

 

[RageOfFury]

Go for it!(Cheers)

Get yourself some Castrol Syntec 0W-30, known as "German Castrol". It's a Group IV/PAO TRUE synthetic unlike M1, Pennzoil Platinum, Quaker State Ultimate Durability, etc.

Check out my synthetic oil thread for more info :

http://www.jeepkj.com/forum/showthread.php?t=41649

 

[Powerslave]

I got mine with 58K, switched to synthetic immediately, are at 68k now, on 2nd syn change.

 

[LibertyTC]

54k is a good time to switch to syn.
When I bought my kj at 36k previous owner had conventional dealer oil changes, the first thing I did was have them do a real engine oil flush, and new Mobil 1 synthetic installed.
I now change my own fluids (except transmission) and keep the oil filter cap and tube clean, change pcv once every 18 months. No leaks, I like the K&N filter as it has a 1 inch nut on bottom to make removal easy.

 

[AtoB]

synthetic it is....
any oil recommendations? Castrol Syntec 0W-30?
i want something that is easy to find on the shelf...
my main car uses Castrol 10w60... its impossible to find

 

[RageOfFury]

synthetic it is....
any oil recommendations? Castrol Syntec 0W-30?
i want something that is easy to find on the shelf...
my main car uses Castrol 10w60... its impossible to find

Castrol Syntec 0w-30 "made in germany" is easy to find here where I live. Wal mart and Canadian Tire carry it. You should be able to find it in the US at PepBoys, AutoZone, etc.

It's a TRUE synthetic and totally worth it IMO.

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[belvedere]

GC is a great oil. However, the others mentioned are certainly not bad. The performance of an oil is dependant on the add pack just as much as the base oil.

The group III oils mentioned (PP, QS) are very good oils, as is M1, which I'm not convinced is group III. Show me the proof. Mobil is very tight-lipped about the base oil used in M1, so therefore comes the internet legend that it must be group III. I know of one spectrograph analysis done on it, and the results were inconclusive. It could very well be that M1 uses a group III/IV blend for the base, but lets not go stating that as fact. Only Mobil knows for sure, and they sure aren't saying.

Any of the oils mentioned in the thread would serve well.

 

[RageOfFury]

I'm not saying that M1 or Pennzoil Platinum aren't good oils. I'm just saying that German Castrol is a notch above them is all. If you can get your hands on GC, then by all means go for it.

 

[AtoB]

Castrol Syntec 0w-30 "made in germany" is easy to find here where I live. Wal mart and Canadian Tire carry it. You should be able to find it in the US at PepBoys, AutoZone, etc.

It's a TRUE synthetic and totally worth it IMO.

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thanks! just picked up 6 quarts.

 

[HoosierJeeper]

thanks! just picked up 6 quarts.

Six???

 

[Redbone]

Six???

Kinda hard to buy 1/2 qt.

 

[RageOfFury]

thanks! just picked up 6 quarts.

Great, does it say "Made in Germany" on the back?

Oh and why 6Qts? The 3.7 takes 5.

 

[AtoB]

Great, does it say "Made in Germany" on the back?

Oh and why 6Qts? The 3.7 takes 5.

nothing to worry about....i always like to have a spare.

 

[HoosierJeeper]

That's a good thing to have in the back...

 

[AtoB]

Great, does it say "Made in Germany" on the back?

Oh and why 6Qts? The 3.7 takes 5.

yes it does.

 

[AtoB]

thanks for all the responses guys.
any other recommendations on fluids?
differential, transmission, and coolant?...
since i bought it used, and have no idea when the fluids were changed, i figured i'd play it safe and get them all done.

A

 

[belvedere]

Trans: ATF+4 (brand not important, as long as ATF+4)
Coolant: G-05
Diff: synthetic is good!

 

[RageOfFury]

Diff: synthetic is good!

80W-90 gear & axle lube in the front, 75W-90 synthetic gear lube in the rear(75W-140 synthetic if you tow) + limited-slip additive if you have a LSD.